MDB with annotation in weblogic exception

I am eveloping a sample application (MDB with annotation in weblogic), but While deploying the ear application I am get this exception

weblogic.j2ee.dd.xml.AnnotationProcessException: [EJB:015001]Unable to link class classes.com.LongProcessMessageBean in Jar C:\Oracle\Middleware\user_projects\domains\dev_domain\servers\AdminServer\tmp\_WL_user\myEjbTest\awr4ve\my.jar : java.lang.NoClassDefFoundError: classes/com/LongProcessMessageBean (wrong name: com/LongProcessMessageBean) at weblogic.j2ee.dd.xml.BaseJ2eeAnnotationProcessor.addProcessingError(BaseJ2eeAnnotationProcessor.java:1272) at weblogic.j2ee.dd.xml.BaseJ2eeAnnotationProcessor.addFatalProcessingError(BaseJ2eeAnnotationProcessor.java:1277) at weblogic.ejb.container.dd.xml.EjbAnnotationProcessor.processAnnotations(EjbAnnotationProcessor.java:168) at weblogic.ejb.container.dd.xml.EjbDescriptorReaderImpl.processStandardAnnotations(EjbDescriptorReaderImpl.java:344) at weblogic.ejb.container.dd.xml.EjbDescriptorReaderImpl.createReadOnlyDescriptorFromJarFile(EjbDescriptorReaderImpl.java:204) at weblogic.ejb.spi.EjbDescriptorFactory.createReadOnlyDescriptorFromJarFile(EjbDescriptorFactory.java:93) at weblogic.ejb.container.deployer.EJBModule.loadEJBDescriptor(EJBModule.java:1210) at weblogic.ejb.container.deployer.EJBModule.prepare(EJBModule.java:382)